Article
Engineering, Electrical & Electronic
Akshaya Kumar Aliyana, Priyanka Ganguly, Ajay Beniwal, S. K. Naveen Kumar, Ravinder Dahiya
Summary: The estimation of pH is crucial in various applications, and this study presents a screen-printed flexible and disposable pH sensor that uses the impedimetric method. The sensor exhibits high sensitivity and can be used for pH monitoring of soil, potentially contributing to digital agriculture.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Venkat Kasi, Sotoudeh Sedaghat, Alejandro M. Alcaraz, Murali Kannan Maruthamuthu, Ulisses Heredia-Rivera, Sina Nejati, Juliane Nguyen, Rahim Rahimi
Summary: This paper presents the fabrication of a flexible glass-based pH sensor suitable for biomedical and environmental applications. The sensor was fabricated using the cold atmospheric plasma technique and a pH sensitive silica coating was deposited onto a carbon electrode. The sensitivity and stability of the sensor were improved through a postprocessing step.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Ajay Beniwal, Priyanka Ganguly, Akshaya Kumar Aliyana, Gaurav Khandelwal, Ravinder Dahiya
Summary: This article presents a flexible, cost-effective, and disposable humidity sensor developed on a paper substrate. The sensor demonstrates good sensing performance, high flexibility, stability, repeatability, short response/recovery time, and good reproducibility. The sensor's efficacy is evaluated for spatial humidity monitoring, respiration rate monitoring, and soil moisture monitoring, showing its potential applications in environmental, agricultural, and healthcare fields.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Yohan Laffitte, Bonnie L. Gray
Summary: This paper presents the development of a flexible, textile-based, screen-printed electrode system for biosensing applications, specifically for real-time pH measurement. The optimized polyaniline (PANI) composite-based sensors demonstrated high sensitivity and sufficient response time for pH measurement.
Article
Materials Science, Multidisciplinary
Zhiyuan Jing, Shaojun Qi, Xiao Tao, Helong Yu, Wei Zhang, Yulin Qiao, Xiaoying Li, Hanshan Dong
Summary: The ASP technique simplifies the reduction and nitrogen doping of GO, with the incorporation of metal/metal oxides nanoparticles, resulting in improved electrical and electrochemical properties.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Vidhya C. Valsalakumar, Amala Shaliya Joseph, Juveena Piyus, Suni Vasudevan
Summary: Modern clinical chemistry research has a strong need for materials for biomarker screening. In this study, a simple enzyme-free electrochemical sensor was developed for the detection of L-Tyrosine (L-Tyr) using a novel ternary nanocomposite material. The nanocomposite, named PGZ, was made by decorating zirconium dioxide nanoparticles onto a polyaniline-graphene oxide composite. The sensor exhibited excellent sensitivity, selectivity, and reproducibility for detecting L-Tyr in various biological samples.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Mohd Salman Siddiqui, M. Aslam
Summary: A simple pH sensor is developed using a 3D porous graphene framework blended with quinizarin. The sensor shows good performance in detecting pH changes in different solutions and soil samples. It has a high sensitivity, negligible hysteresis, and long-term stability, making it a promising candidate for diverse pH-sensing applications.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Sotoudeh Sedaghat, Venkat Kasi, Sina Nejati, Akshay Krishnakumar, Rahim Rahimi
Summary: Research on cold atmospheric plasma (CAP) treatment to improve the performance of solid-contact ion-selective electrodes (SC-ISE) in all-solid-state printed electrochemical sensors. By minimizing water layer formation, the long-term stability of the sensor was significantly enhanced.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
K. F. Albertin, L. Akashi, R. Challhua, J. Zuniga, M. Rivera, W. Rondan, T. A. Cortiz, S. Longobardi, L. Barreto, A. Champi
Summary: In this study, graphene oxide (GO) films were deposited on the surface of titanium dioxide nanotubes (TiO2NTs), and electrochemical characterization revealed their potential application as pH sensors. TiO2NTs were obtained through electrochemical anodization technique, while GO was fabricated by a modified Hummer's method and deposited using dip coating technique at room temperature. The thermally treated TiO2NTs/GO structure exhibited a reduction of the GO deposited film. The samples were analyzed using Raman spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Depending on the GO oxidation time and thermal treatment, a uniform reduced GO film was observed on the TiO2NTs. A pH electrode characterization demonstrated a linear response of the TiO2NTs/GO with a non-hysteresis effect of 57 mV/pH.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Electrochemistry
Kanglong Lin, Jingxin Xie, Yu Bao, Yingming Ma, Lijuan Chen, Huan Wang, Longbin Xu, Yitian Tang, Zhenbang Liu, Zhonghui Sun, Shiyu Gan, Li Niu
Summary: This study reports a self-adhesive tannin-graphene supramolecular aggregates for wearable potentiometric pH sensors. The sensor exhibits a reversible and Nernstian response, and is suitable for real-time monitoring of sweat pH.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Dong Seok Kim, Jae-Min Jeong, Hong Jun Park, Yeong Kyun Kim, Kyoung G. Lee, Bong Gill Choi
Summary: This study developed a highly concentrated and conductive ink based on defect-free graphene through a scalable fluid dynamics process. The screen-printed graphene conductor showed high electrical conductivity and maintained high conductivity under mechanical bending, compressing, and fatigue tests. A printed electrochemical sodium ion sensor with high potentiometric sensing performance was fabricated using the newly developed graphene ink.
NANO-MICRO LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Irina Georgiana Munteanu, Vasile Robert Gradinaru, Constantin Apetrei
Summary: Peptides have been used as components in biological analysis and fabrication of novel sensors due to their synthesis protocols and diverse structures. This study presents the development of a peptide-based sensor with improved performance for the quantification of rosmarinic acid in cosmetic products.
Article
Chemistry, Analytical
Simon Peter Whelan, Zari Tehrani, Martin Peacock, Joao Vitor Paulin, Owen Guy, David Gethin
Summary: Screen printed pH sensors using conductive carbon/graphene coated with DMSOmelanin have been developed for high sensitivity pH detection, showing consistent and accurate results across different types of culturing media and pH ranges. This sensor has the potential to be widely used in monitoring environmental conditions of cultured microorganisms in bioreactors.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Antonio Ruiz-Gonzalez, Harriet Kempson, Jim Haseloff
Summary: The development of sensing devices for precision agriculture is crucial to boost crop yields and reduce food shortages caused by a growing population. The use of plant monitoring sensors based on ruthenium oxide nanofilms allows for direct monitoring of plant pH levels, representing a step forward in precision agriculture technology.
Article
Chemistry, Multidisciplinary
Su-Ho Jung, Young-Min Seo, Taejun Gu, Wonseok Jang, Seog-Gyun Kang, Yuhwan Hyeon, Sang-Hwa Hyun, Jae-Hyun Lee, Dongmok Whang
Summary: A novel Gr-ISFET pH sensor based on proton-permeable defect-engineered graphene was fabricated, which showed a super-Nernstian pH response (approximately -140 mV/pH) under optimized conditions by adjusting the grain boundary density of graphene and the functional group on the SiO2 surface.
Article
Fisheries
Camila Oliveira Paranhos, Luanna do Carmo Neves, Walisson Souza e Silva, Ronald Kennedy Luz
Summary: The aim of this study was to evaluate the survival and water quality of Hypsolebias flagellatus during transportation with different salt concentrations, transport times, and previous diets. The results showed that the concentration of 4 g salt/L had the highest dissolved oxygen, and the survival rate was lower after 48 hours of transportation. Meanwhile, the type of diet also had an influence on water quality and dissolved oxygen.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Chemistry, Analytical
Priscila Fernanda Pereira Barbosa, Valmor Roberto Mastelaro, Eduardo Guimaraes Vieira, Devaney Ribeiro do Carmo
Summary: A synthesis method for the functionalization of beta-cyclodextrin (beta-Cd) with polyamide dendrimer PAMAM G.0 and the formation of a mixed-valence complex (beta-Cd-PAMAM-Ag/Fe) with silver and potassium hexacyanoferrate (III) was proposed. The material was characterized using SEM, FTIR, XRD, EDS, and EPR. The electrochemical behavior of the hybrid complex was investigated, and optimal analytical responses were obtained by evaluating various parameters. The beta-Cd-PAMAM-Ag/Fe material showed successful application in the electrocatalytic oxidation of dopamine using CV and SWV.
Article
Plant Sciences
Mauro Mesko Rosa, Renan Souza Silva, Marcus Vinicius Fipke, Raul Andres Cordova, Nelson Diehl Kruse, Edinalvo Rabaioli Camargo, Gustavo Maia Souza, Luis Antonio de Avila
Summary: Plants exposed to suboptimal environmental conditions often have reduced crop yields, but pre-exposure to mild stress can prepare plants for subsequent challenges. This study investigated the effects of herbicide sub-doses on oxidative stress caused by waterlogging and the potential for waterlogging to mitigate herbicide injury in soybean crops. The results showed that early exposure to a sub-dose of oxyfluorfen enhanced the plants' ability to tolerate waterlogging, while pre-treatment with the herbicide paraquat did not have significant effects. Additionally, pre-exposure to waterlogging reduced the damage caused by herbicides, suggesting the existence of cross-tolerance between herbicides and waterlogging in soybean plants.
ACTA PHYSIOLOGIAE PLANTARUM
(2023)
Article
Materials Science, Ceramics
Reginaldo Muccillo, Sabrina G. M. Carvalho, Rafael L. Denaldi, Eliana N. S. Muccillo
Summary: This study investigated the impregnation of molten Na2CO3-K2CO3 eutectic compositions into two types of ceramic materials, and evaluated the conductivity and carbonate ion permeation of the ceramics through various analyses. The research aimed to prepare dual-phase membranes for carbon dioxide separation and develop carbon dioxide sensors.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mahmoud. S. Alkathy, Attaur Rahaman, Valmor R. Mastelaro, Fabio. L. Zabotto, Flavio Paulo Milton, J. A. Eiras
Summary: Double hysteretic loop ceramics with different polarization were achieved through B-site co-doping engineering. The sample co-doped with Mg2+ and Ni2+ exhibited higher polarization and considerable breakdown strength, resulting in a high energy storage density and efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Maria Joseita dos Santos Costa, Aline Estefany Brandao Lima, Ester Pamponet Ribeiro, Gilson dos Santos Costa, Elson Longo, Geraldo Eduardo da Luz, Laecio Santos Cavalcante, Reginaldo da Silva Santos
Summary: This paper discusses a facile method for preparing transition metal tungstate thin films and their remarkable photoelectrochemical properties. The films were deposited onto conductive fluorine-doped tin oxide (FTO) glass substrate. The results show that the films have crystalline structures and nanostructured materials. They also demonstrate indirect transitions and successful application as photoanodes in a photoelectrochemical cell under polychromatic irradiation. This work provides a comparative and comprehensive study on AWO(4) films and suggests their potential applications in water splitting reactions and other photoelectrocatalytic processes.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Polymer Science
Fernando C. M. Freire Filho, Josiane A. Santos, Alex O. Sanches, Eliton S. Medeiros, Jose A. Malmonge, Michael J. Silva
Summary: The effects of multiwall carbon nanotubes (MWCNTs) on the electrical, dielectric, and piezoelectric properties of the ferroelectric ceramic/castor-oil polyurethane (PUR) composite films were investigated. The addition of MWCNTs significantly enhanced the electrical and piezoelectric properties of the composite films by acting as conductive bridges between the lead zirconate titanate (PZT) particles. The dispersion of MWCNT nanoparticles also improved the poling effectiveness and increased the d(33) coefficient of the three-phase piezoelectric composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Biomedical
Fabio Muchenski, Jenifer Pendiuk Goncalves, Yasmin Carla Ribeiro, Celia Regina Cavichiolo Franco, Carolina Camargo de Oliveira, Bruna Hilzendeger Marcon, Anny Robert, Lia Carolina Soares de Medeiros, Ronei Cardoso de Oliveira, Adilson Jesus Aparecido de Oliveira, Ney Mattoso
Summary: NiFeMo alloy nanoparticles were synthesized through co-precipitation with organic additives. The thermal evolution of the nanoparticles showed a significant increase in size and a crystalline structure similar to Ni3Fe phase. Magnetic property measurements indicated an increase in saturation magnetization and a decrease in remanence magnetization. Cell viability assays demonstrated that the nanoparticles were not cytotoxic up to a concentration of 0.4 μg/mL for both non-tumorigenic and tumor cells.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps for analyzing descriptors based on QTAIM in periodic and nonperiodic systems. The software automates topological analysis calculations through the TOPOND package and generates a report to identify descriptor values at Bond Critical Points (BCP) and Critical Points of the Laplacian of the electron density (LCP), facilitating the classification of chemical interactions. The created maps can be stored as HTML files for future reference. The software's validity was confirmed through the study of various systems with 0-3D dimensions and the reevaluation of the topology of urea molecular crystal and its isolated molecule.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Analytical
Rafael Aparecido Ciola Amoresi, Noemi Angelica Vieira Roza, Talita Mazon
Summary: In this study, a flexible electrochemical immunosensor based on CeO2 nanorods immobilized with CRP antibody was developed for the detection of cardiovascular disease biomarker. The CeO2 nanorods were obtained by microwave-assisted hydrothermal method and characterized by XRD, TEM, and XPS. The immunosensor's working electrode was prepared by dispersing the nanorods in organic solvent, functionalizing them with cystamine and glutaraldehyde, and then modifying them with CRP antibody. The developed immunosensor exhibited good reproducibility, a wide detection range, and a low detection limit, making it suitable for point-of-care applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Thiago A. Lodi, Gustavo Galleani, Leonnam G. Merizio, Luiz G. Jacobsohn, Valmor R. Mastelaro, Andrea S. de Camargo
Summary: NaPO3-20Ga(2)O(3)-xNa(2)WO(4) (x = 0, 1, 3, 5 and 10% mol) tungsten gallium-phosphate glasses were synthesized and evaluated as potential intrinsic glass scintillators due to their high chemical stability and excellent optical properties. Increasing Na2WO4 content led to a decrease in OH- groups and the presence of sole W6+ species. The glasses exhibited high transmittance (around 90%) over a wide spectral range (400 to 2500 nm) and luminescence emission characteristic of the WO42- complex with average lifetimes ranging from 32 to 20 μs. Cryogenic temperatures resulted in a significant increase in luminescence emission for the NaPGaW glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
Adriana Alencar Santos, Jean Valdir Uchoa Teixeira, Carlos Alberto Fonzar Pintao, Diego Rafael Nespeque Correa, Carlos Roberto Grandini, Paulo Noronha Lisboa-Filho
Summary: Developing novel titanium alloys suitable for long-term use in orthopedic and dental prostheses is crucial for clinical needs to prevent adverse implications and costly procedures. This study investigated the corrosion and tribocorrosion behavior of two recently developed titanium alloys, Ti-15Zr and Ti-15Zr-5Mo, and compared them with CP-Ti G4. The results showed that Ti-15Zr and Ti-15Zr-5Mo exhibited advantageous properties in the electrochemical and tribocorrosion tests compared to CP-Ti G4, indicating the potential for biomedical applications.
Article
Nanoscience & Nanotechnology
Joao V. Paulin, Sinan Bayram, Carlos F. O. Graeff, Carlos C. B. Bufon
Summary: Eumelanin, a quinone-based biomaterial, is being explored as a model for medical and sustainable electronic interfaces due to its biocompatibility, biodegradability, and transducing abilities. This study investigates the charge transport of eumelanin produced from the S. parvus BSB49 strain using current-voltage measurements and impedance/dielectric spectroscopy under controlled humidity conditions. The results show no differences in the electrical response compared to standard synthetic eumelanin, suggesting the potential use of natural eumelanin in sustainable organic (bio)electronic applications.
ACS APPLIED BIO MATERIALS
(2023)
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps to analyze descriptors based on QTAIM applied in periodic and nonperiodic systems. The software automates topological analysis calculations through TOPOND package and generates a report to identify values of descriptors at BCP and LCP, facilitating chemical interaction classification. The generated maps can be stored as HTML files for later consultation. Several systems with 0-3D dimensions were studied to validate the software, and the topology of urea molecular crystal and its isolated molecule were revisited.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Multidisciplinary
Mariana A. M. Rezende, Pedro P. Gromboni, Patricia G. Corradini, Almir Sales, Lucia H. Mascaro
Summary: The water treatment sludge (WTS) is a complex residue that consists of organic and inorganic matter in various states. Improper disposal of WTS can negatively impact the environment, causing a decrease in dissolved oxygen and an increase in metal concentration in watercourses. This study evaluated the effects of using WTS as a substitute for natural sand in cementitious composite on the physical and mechanical properties of concrete, as well as its corrosion resistance.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
